amazon.com is a domain used by Amazon which is an widget company that is part of a network of sites, cookies, and other technologies used to track you, what you do and what you click on, as you go from site to site, surfing the Web. Over time, sites like amazon.com can help make an online profile of you usually including the sites you visit, your searches, purchases, and other behavior. Your profile can then be exchanged and sold between various companies like amazon.com as well as being sold to other advertisers and marketers.
More about Amazon:
amazon.com shopping website
Sites using amazon.com to track you: